/*
package com.manli.taobao;

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Arrays;
import java.util.Map;

import javax.crypto.Mac;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

import org.apache.commons.lang3.StringUtils;

import com.manli.common.utils.MD5FileUtil;
import com.taobao.api.Constants;

public class TaoBaoKeSignUtil {
	public static String signTopRequest(Map<String, String> params, String secret, String signMethod) throws IOException {
		// 第一步：检查参数是否已经排序
		String[] keys = params.keySet().toArray(new String[0]);
		Arrays.sort(keys);

		// 第二步：把所有参数名和参数值串在一起
		StringBuilder query = new StringBuilder();
		if (Constants.SIGN_METHOD_MD5.equals(signMethod)) {
			query.append(secret);
		}
		for (String key : keys) {
			String value = params.get(key);
			if (StringUtils.isNotEmpty(key)) {
				query.append(key).append(value);
			}
		}

		// 第三步：使用MD5/HMAC加密
		byte[] bytes;
		if (Constants.SIGN_METHOD_HMAC.equals(signMethod)) {
			bytes = encryptHMAC(query.toString(), secret);
		} else {
			query.append(secret);
			bytes = encryptMD5(query.toString());
		}

		// 第四步：把二进制转化为大写的十六进制(正确签名应该为32大写字符串，此方法需要时使用)
		return byte2hex(bytes);
	}

	public static byte[] encryptHMAC(String data, String secret) throws IOException {
		byte[] bytes = null;
		try {
			SecretKey secretKey = new SecretKeySpec(secret.getBytes(Constants.CHARSET_UTF8), "HmacMD5");
			Mac mac = Mac.getInstance(secretKey.getAlgorithm());
			mac.init(secretKey);
			bytes = mac.doFinal(data.getBytes(Constants.CHARSET_UTF8));
		} catch (GeneralSecurityException gse) {
			throw new IOException(gse.toString());
		}
		return bytes;
	}

	public static byte[] encryptMD5(String data) throws IOException {
		return MD5FileUtil.getMD5String(data).getBytes();
	}

	public static String byte2hex(byte[] bytes) {
		StringBuilder sign = new StringBuilder();
		for (int i = 0; i < bytes.length; i++) {
			String hex = Integer.toHexString(bytes[i] & 0xFF);
			if (hex.length() == 1) {
				sign.append("0");
			}
			sign.append(hex.toUpperCase());
		}
		return sign.toString();
	}
}
*/
